search for: po_iterator_storag

Hello, I was playing with PostOrderIterator.h and I found a strange behavior. The core class, po_iterator, is a template. One of its template parameters is the type of the set used to store visited nodes. An instance of that type is used by its superclass, po_iterator_storage. Default value of the set type is llvm::SmallPtrSet. This is correct, since po_iterator_storage::insertEdge expects that the set type provides an insert methods which returns a boolean value. Later three classes are derived from po_iterator -- po_ext_iterator, ipo_iterator, and ipo_ext_iterator...